We present a measurement of the elastic differential cross section dσ( pp-→ pp-)/dt as a function of the four-momentum-transfer squared t. The data sample corresponds to an integrated luminosity of ≈ 31 nb-1 collected with the D0 detector using dedicated Tevatron pp- Collider operating conditions at √s = 1.96 TeV and covers the range 0.26 < │t │ < 1:2 GeV2. For │t│< 0.6 GeV2, dσ/dt is described by an exponential function of the form Ae-b│t│with a slope parameter b = 16.86 ± 0.10(stat) ± 0.20(syst) GeV-2. A change in slope is observed at │t│≈ 0.6 GeV2, followed by a more gradual │t│ dependence with increasing values of │t│.
Hedin, David, "Measurement of the Differential Cross Section dσ/dt in Elastic pp- Scattering at √s = 1.96 TeV" (2012). Faculty Peer-Reviewed Publications. 1003.
Department of Physics
We thank the Fermilab Beams Division for designing and providing the special beam conditions for the data taking. In particular we thank N. Mokhov, S. Drozhdin, M. Martens and A. Valishev for their important contributions to the forward proton detector (FPD). We also thank J. Soffer and M. Islam for useful discussions.We thank the staffs at Fermilab and collaborating institutions, and acknowledge support from the U.S. Department of Energy (DOE and National Science Foundation (NSF) (USA); CEA and CNRS/IN2P3 (France); MON, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia);CONACyT (Mexico);NRF (Korea); FOM(The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); BMBF and DFG (Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS and CNSF (China).
American Physical Society